3691963 has 4 divisors (see below), whose sum is σ = 4027608. Its totient is φ = 3356320.

The previous prime is 3691957. The next prime is 3692021.

3691963 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3691963 - 2⁹ = 3691451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3691913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167806 + ... + 167827.

It is an arithmetic number, because the mean of its divisors is an integer number (1006902).

Almost surely, 2^3691963 is an apocalyptic number.

3691963 is a deficient number, since it is larger than the sum of its proper divisors (335645).

3691963 is a wasteful number, since it uses less digits than its factorization.

3691963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335644.

The product of its digits is 26244, while the sum is 37.

The square root of 3691963 is about 1921.4481517855. The cubic root of 3691963 is about 154.5559681743. Note that the first 3 decimals are identical.

It can be divided in two parts, 369 and 1963, that added together give a palindrome (2332).

The spelling of 3691963 in words is "three million, six hundred ninety-one thousand, nine hundred sixty-three".